MRS. CARYN M. MASTERSON MS, OTR/L
NPI 1336398759
Occupational Therapist in Hammond, IN
About Mrs. Caryn M. Masterson Ms, Otr/l NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. CARYN M. MASTERSON MS, OTR/L (NPI 1336398759) is an individual occupational therapist in Hammond, Indiana and active in the NPI registry since September 2008. She maintains a secondary practice location in Midlothian.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mrs. Caryn M. Masterson Ms, Otr/l is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Caryn Masterson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Merrillville, IN 46410
- Reassigned Medicare billing, Indiana enrollment
- Medicare enrollment name: Bone & Joint Specialists, P.C.
- 23 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HAMMOND, IN 46324
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Caryn Masterson's NPI number?
The NPI number for Caryn Masterson is 1336398759. It was assigned to this individual provider in the NPPES registry on September 10, 2008.
Where is Caryn Masterson located?
Caryn Masterson practices at 7443 Indianapolis Blvd, Hammond, IN 46324. The listed phone number is (219) 844-8100.
What is Caryn Masterson's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Caryn Masterson enrolled in Medicare?
Yes. Caryn Masterson is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Caryn Masterson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caryn Masterson reassigns Medicare benefits to Bone & Joint Specialists, PC (Merrillville, IN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Caryn Masterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Caryn Masterson was last updated on May 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.